<html>
    <head>
        <meta charset="utf-8">
        <title>王海涛</title>
    </head>
    <body>
        <h1>hello wht</h1>
        <p>Django 测试</p>
        {% block mainbody %}
        <p>original</p>
        {%endblock%}
    </body>
</html>